Coating shot shells



Patented Feb. 23, 1932 UNITED STATES JAMES :E. oalmrcnenL, or LOWELL,

MASSACHUSETTS, assrenon, Bi MESNE ASSIGN- asn MENTS, T0 WINCHESTER REPEATING ARMS COMPANY, A CORPORATION OF DELA- WARE COATING- SHOT' SHELLS 1T 0 Drawing.

the charge and a paper or'cardboard disc in the form of a wad is arranged in the upper end of this cylinder to retain the charge therein. The end of the paper cylinder is crimped over the outer face of the wad to pre- Vent its displacement. The paper or cardboard used in forming the wad and cylinder is preferably coated or impregnated with paraflin.

It has been proposed to coat the exterior of shot shells with lacquer, varnish or other waterproof coatings and particularly to coat formation of bubbles on the top wad but also. produces a smoother, more uniform coating that materially enhances the appearance of them with a lacquer having a nitrocellulose ase.

In coating the shot shells they are generallydipped into a tank containing the varnish, lacquer orother waterproof coating and a or coating of the lacquer or varnish placed over the entire shell. In practicing this process, several diinculties have been encountered. Ifthe shot shells are cold when they are di ped, bubbles are apt to form on the top wad in the angle between it and the crimp at the top of the paper cylinder and it is also difiicult to obtain a smooth, uniform coating. I have found that these difiiculties can be. avoided by heating the shells before they are dipped into the varnish or lacquer. e heating of the shells not only avoids the the shot shell.

In practicin shells are first the-lacquer, varnish or other waterproof coating in the same manner as heretofore. Care mustbe taken to prevent heating of the shot shells to cause the wad to melt. I accordingly preferably heat the shells to a temperature of about 110 F.

or at any rate to a-temperature substantially below the melting point of the parafiin. The

my improved process, the I eated and then dipped into a temperature that would parafiin on the paper cylinder and Application filed December 15, 1928. Serial No. 326,418.

heated shells are then dipped into the lacquer, varnish or other Waterproof coating and when removed after the dipping opera-- tion and dried a superior product is obtained. As stated above, the bubbleswhich have heretofore formed on the top Wad in the angle between avoided and a smoother, ing'is obtained.

In some instances I have found it advisable to heat the shells a second time as they come out of the lacquer, but this second more uniform coatheating is not essential in most cases and the invention is not limited thereto.

I claim:

1. The process of coating loaded shot shells consisting essentially of heating the shell to be coated and then coating it with a waterproof coating composition.

2. The process of coating loaded shot shells consisting essentially of heating a shell to a tem rature of substantially-110 F. and then dipping the heated shell into a waterproof lacquer. 1

3. The process of coating loaded shot shells consisting essentially of heating the shell, dipping it into a waterproof lacquer while in heated condition and thenheating the coated shell.

In testimony whereof I aflix my signature. JAMES H. CARMIOHAEL.

it and the crimp are 

